Checker chamber for regenerative furnaces and the like



L. T. PETlT Aug. 1, 1933.

CHECKER CHAMBER FOR REGENERAT-IVE FURNACES AND THE LIKE Filed March 181933 6 Sheets-Sheetl INVENTOR L EO/V Zv'O/WHJPEUZ ATTORNEYS L. T. PETIT1,920,885 CHECKER CHAMBER FOR REGENERATIVE FURNACES AND THE LIKE FiledMarch 18, 1953 w 6 Sheets-Shee t 2 Aug. 1, 1933.

ATTORNEYS 7 PW mm E 0 r M a Z 6 Sheets-Sheet 3 I T. PETlT CHECKERCHAMBER FOR REGENERATIVE FURNACES AND THE LIKE FiledMarch 18, 1933INVENTOR ATTORNEYS Aug. 1, 1933.

LEO/v ZZO/I Jf Er/IT Aug. 1, 1933. PET|T 1,920,885

I CHECKER CHAMBER FOR REGENERATIVE FURNACES AND THE LIKE Filed March 18,1933 6 Sheets-Sheet 4 llllllll lllllll lllllll In H 1| II II II III llII II [I l lIllll [III I INVENTOR k L'fa/vi/i oM/wgr/r BY Z ATTORNEYCHECKER CHAMBER FOR REGENERATIVE FURNACES AND THE LIKE Filed March 18,1933 6 Sheets-Sheet 5 n n HI l I III-III l INVENTOR ATTORNEYS Aug. 1,1933.

L. T. PETIT 1,920,885 CHECKER CHAMBER FOR REGENERATIVE FURNACES AND THELIKE Filed March' 18, 1933 6 Sheets-Sheet 6 ATTORNEYS Patented Aug. 11933 This invention relatesv to furnaces and more particularly tofurnaces using regenerative chambers such as open hearth furnaces, andhas for its object the provision of an improved type of regenerativechamber.

Another object of the present invention is to provide means to readilyremove and replace the checker brick work in the regenerative chambers.

Other objects and advantages will be apparent as the invention is morefully disclosed.

In accordance with the objects of the present invention I have devised anovel type of regenerative chamber in which the checker brick work issupported upon a suitable structural frame that is mounted on wheels, sothat they may be Withdrawn from the chamber when the checkers requirecleaning and removal. New or spare assemblies can'then be installedwithin the chamber .as soon asthe old ones are withdrawn, therebyproviding for the substantial elimination of shut down periodsheretofore experienced in these type of furnaces. As a modification ofthe present invention the entire chamber can be made removable in asimilar manner if desired. Before further'disclosing the presentinvention reference should be made to the accompanying drawings whereinFig. 1 illustrates in top plan view partly in section of an. open hearthfurnace assembly'of units showing the adaptation of the present:invention thereto; g

Fig. 2 is a side elevation sectional view along plane 2-2, Fig. 1; I e 1Fig. 3 is a sectional view along plane 3-13, Fig. 1;

Fig. 4 shows a modified structure of the invention; Y

Fig. 5 shows a second modified structure of'the invention; and

Fig. 6 is a section taken along plane 6-6 of Fi 5.

' In Fig. 1 the regenerative furnace 1, the stack 2 and two sets ofchecker chambers 3 are shown in their typical arrangement. The two setsof chambers are necessary to provide for alternate use through periodicreversal of damper I 4 in a manner heretofore, practiced in the art.As'the presentxinvention relates specifically to the checkerchamberfiandto an'improvement therein, further identification of cooperatingelements of the assembly is believed not necessary in view of the factthatsuch elements are CHECKEB- CHAIVIBER FOR REGENERATIVE FURNACES ANDTHE LIKE Leon Thomas Petit, Pittsburg, Calif.

Application March 18, 1933. Serial No. 661,624

' 10 claims. (01. 26319) function precisely as checker brick structurescompared to that required for a complete shut within the chamber 3 isprovided.

but'it is believed unnecessary to specifically demany the same removablechecker assembly aptation of the present invention wherein the en-PATENT OFFICE eration of the assembly also need not be described.

In accordance with the present invention checker chambers 3 are improvedby providing removable checker brick assemblies 5 supported 60 uponwheels 6 (not shown in Fig. 1) engaging in tracks '7. The entireassembly 5 is so constructed that it may be run into the chamber 3 ontracks"? and sealed therein and thereafter.

heretofore built integrally therein as heretofore in the art. When thechecker brick requires cleaning or replacing the seal may be broken, thechecker assembly withdrawn and a new one inserted in its place. The timeinterval required for such operation is relatively short as down torepair and replace a checker structure integrally built up within thechamber.

There are many possible adaptations of this broad idea of removablechecker brick assemblies and many possible structures thereof. Onestructure maybe noted in Figs. 2 and 3, wherein the checker brick 8 isshown built up with end and side walls 9--9 and 1010 respectively. Theframe of the truck 11 carrying wheels 6 carries also the base -12 of thechecker assembly and between the base 12 and checker brick 8 areprovided two longitudinally extending passageways 13-13 separated bypartition 14. The bottom of' the assembly at one end is provided with aconduit 15 to connect passageways 13-13 to flue 16 leading to stack 2.Means such as indicated at 17 to seal the assembly There are otherstructural features illustrated fine the several parts as they arecommon in the prior art and readily recognizable.

In the modification illustrated in Fig. 4,. essenpears as heretoforedescribed in Figs. 1, 2 and 3 with the new feature of constructingchamber 3 with an arched roof 20 common to both removable checkerassemblies contained therein.

1 In Figs. 5 and 6 I have shown a further adaptire checker chamber isbuilt up upon a frame 21 supported by wheels 22 running in tracks 23.The checker chamber consists of side, end, top and bottom walls 24, 25,26 and 2'? respectively with .checker brick 28 built up therebetween. Aplurality of longitudinally extending flues 29 are provided inthe'bottom of the chamber between 1 the bottom of checker brick 28 andbottom 2'7, the fines 29 communicating at one end with conduit 30extending downwardly through bottom 27 and communicating with flue 31leading to stack 2 as before. Outlet opening 32 is adapted to be placedin communication with opening 33 leading to an open hearth furnace 1.

In such an assembly as illustrated in Figs. 5 and 6 an entire checkerchamber may be constructed at a point remote from the furnace, placed inposition for use, taken away when necessary for repair, and replaced ina relatively short time interval with a new assembly, thereby avoidingextensive and expensive shut down periods.

Having broadly and specifically described the present invention it isapparent that many modifications and departures may be made thereinwithout departing essentially from the nature and scope thereof and allsuch modifications and departures are contemplated as may fall withinthe scope of the following claims:-

What I claim is:

1. In a checker chamber forregenerative furnaces and the like,permanently located side, back end and top walls and a separateremovable unit consisting of the bottom, front end wall and checkerbrick assembly of said chamber.

2. In a checker chamber for regenerative furnaces and the like,permanently located side, back end and top walls and a separate assemblyof bottom, front end wall and checker brick adapted to be inserted andwithdrawn from the said chamber as a unit without disturbing thepermanently located walls of said chamber.

3. In a checker chamber for regenerative furnaces and the like, achecker chamber having substantially permanently located side, back endand top walls and a separate checker brick assembly including the bottomand front end walls, said assembly being adapted to be inserted andwithdrawn from the said chamber as a unit without disturbing thepermanently located walls of said chamber.

4. In a checker chamber for regenerative furnaces and the like, achecker brick assembly built up as a separate unit upon a base, saidbase having means thereon to permit a ready insertion and withdrawal ofthe checker brick assembly into and out of said chamber.

5. In a checker chamber for regenerative furnaces and the like, achecker brick assembly mounted upon wheels as a separate unit andadapted to be readily inserted or removed from the checker chamber.

6. A checker chamber for regenerative furnaces, said chamber being builtas a separate unit upon a base frame carried on wheels and adapted to bereadily moved into and out of cooperative posltion with respect to saidfurnace.

7. A checker brick assembly for checker chambers comprising a base framesupported on wheels, a checker chamber bottom carried by said frame,checker brick work, and a checker chamber end wall built up on saidbottom, and a flue opening extending through said bottom communicatingwith said checker brick work.

8. A checker chamber comprising permanently located side, top and backend walls, a trackway extending thereinto, and a checker brick assemblybuilt up on a frame carried by wheels engaging said trackway and adaptedto be positioned within said chamber.

9. A checker chamber comprising permanently located side, top and backend walls, a trackway extending thereinto, and a checker brick assemblyincluding a front end wall for said chamber built up on a frame carriedby wheels engaging said trackway, said assembly being adapted to bereadily inserted and withdrawn within the chamber.

10. A checker chamber comprising permanently located side, top and backwalls, a trackway extendingthereinto, a flue opening in the bottom, anda separate checker brick assembly including a front end wall for saidchamber built up on a frame carriedby wheels engaging said trackway,said assembly being adapted to be readily positioned within said chamberwalls to complete the chamber structure with all its cooperating partsand elements.

LEON THOMAS PETIT.

